Results 51 to 60 of about 2,984,671 (302)

Analysis of the impact on the gravity field determination from the data with the ununiform noise distribution using block-diagonal least squares method

open access: yesGeodesy and Geodynamics, 2016
The block-diagonal least squares method, which theoretically has specific requirements for the observation data and the spatial distribution of its precision, plays an important role in ultra-high degree gravity field determination. On the basis of block-
Wei Liang   +3 more
doaj   +1 more source

Deficiency indices of block Jacobi matrices and Miura transformation

open access: yesSpecial Matrices, 2022
We study the infinite Jacobi block matrices under the discrete Miura-type transformations which relate matrix Volterra and Toda lattice systems to each other and the situations when the deficiency indices of the corresponding operators are the same.
Osipov Andrey
doaj   +1 more source

The two-block covariance matrix and the CAPM

open access: yesInternational Journal of Portfolio Analysis and Management, 2012
The classical assumptions of the Capital Asset Pricing Model do not ensure obtaining a tangency (market) portfolio in which all the risky assets appear with positive proportions. This paper gives an additional set of assumptions that ensure obtaining such a portfolio.
David J. Disatnik, Simon Benninga
openaire   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Block-matrix-based approach for the hybrid vehicle routing problem with fuzzy travel time and transportation type selection

open access: yes, 2018
This is the experimental data of the manuscript entitled "Block-matrix-based approach for the hybrid vehicle routing problem with fuzzy travel time and transportation type selection".
Yong Chen (4196908)   +3 more
core   +1 more source

A Note on the Eigenvalue Analysis of the SIMPLE Preconditioning for Incompressible Flow

open access: yesJournal of Applied Mathematics, 2012
We consider the SIMPLE preconditioning for block two-by-two generalized saddle point problems; this is the general nonsymmetric, nonsingular case where the (1,2) block needs not to equal the transposed (2,1) block, and the (2,2) block may not be zero ...
Shi-Liang Wu, Feng Chen, Xiao-Qi Niu
doaj   +1 more source

Pivot-Free Block Matrix Inversion [PDF]

open access: yes2006 Eighth International Symposium on Symbolic and Numeric Algorithms for Scientific Computing, 2006
We present a pivot-free deterministic algorithm for the inversion of block matrices. The method is based on the Moore-Penrose inverse and is applicable over certain general classes of rings. This improves on previous methods that required at least one invertible on-diagonal block, and that otherwise required row- or column-based pivoting, disrupting ...
openaire   +4 more sources

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

open access: yesFEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg   +14 more
wiley   +1 more source

matrix-toolbox/CHM_scripts: Sinkhorn Algorithm

open access: yes, 2023
Several CHM matrices (M-scripts) obtained by the Sinkhorn Algorithm are ...
matrix-toolbox
core   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

open access: yesFEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt   +8 more
wiley   +1 more source

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